This is the 11411th most frequent Turkish word.
engelinin
"Engelinin" means "of the obstacle" or "of the person with a disability" depending on the context.
Here, 'engelinin' refers to 'your obstacle or hindrance,' formed with the genitive ending '-in'.
Engelinin üstesinden geldiğinde başarıya ulaşabilirsin.
When you overcome your obstacle, you can achieve success.
Here again, 'engelinin' connotes 'your obstacle,' indicating possession and relationship.
Engelinin ne olduğunu anlamaya çalışıyorum.
I am trying to understand what your obstacle is.
In this case, 'engelinin' signifies 'your obstacle,' again using a possessive construction.